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Individual Calculations October 2021 |
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| Donohoe, Eugene Total change: 29.20 | |   |
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| The 100th Irish Championships 2021 Final Weekender | Dublin | IRL | 2021-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1646 | 1608 | 2.50 | 5 | 0.24 | 20 | 4.80 | |
|  Burke, Kevin A. | | | 1883 | IRL | 0.00 | 1 | -0.17 | 20 | -3.40 | |  Carolan, James | | | 1339 | IRL | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Cooney, Brendan | | | 1818 | IRL | 0.50 | 1 | 0.27 | 20 | 5.40 | | | Wang, Eric | | | 1473 | IRL | 1.00 | 1 | 0.32 | 20 | 6.40 | | | McDonnell, Odhran | | | 1715 | IRL | 0.00 | 1 | -0.35 | 20 | -7.00 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | | | The Irish over50 and over65 championship 2021 | Dublin | IRL | 2021-09-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1762 | 1608 | 2.50 | 4 | 1.22 | 20 | 24.40 | |
| | Macelligott, Gerard | c | | 1966 | IRL | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Grant, David | | | 1208 * | IRL | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Nikrow, Shahram | | | 1871 | IRL | 1.00 | 1 | 0.82 | 20 | 16.40 | | | Harding, Tim D | c | | 2003 | IRL | 0.50 | 1 | 0.42 | 20 | 8.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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